/scratch/workspace/artdaq-demo-v2_09_03/SLF6/s48-e10-prof/build/artdaq_node_server/v1_00_07/src/node_modules/xml2js/node_modules/xmlbuilder/node_modules/lodash/keysIn.js
function Foo() { this.a = 1; this.b = 2; }
Foo.prototype.c = 3;
_.keysIn(new Foo); // => ['a', 'b', 'c'] (iteration order is not guaranteed)